Answer: The reason there is no solution offered is that it is not a detrimental problem, it just looks ugly to some people. Modern integrated pest management practices would consider this something that does not require control. In any case, they are a naturally occuring phenomenon and do disappear on their own once the growth conditions are no longer favorable. If you want to try some sort of chemical treatment you could ask your local county extension what they might be able to recommend. They will have the most up to date recommendations for chemical controls in your state, if there are any that would work in your particular situation they will know.
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